In the year 2030, digital networks are reaching out everywhere, and technology pushing light and electrons has advanced to a state where it almost drives the human will...

Information networks continue to expand and crimes continue to become more complex. In this society on the borderline to chaos, an organization that specializes in hunting down and eliminating crime was established. This is Section 9, the so called "Stand Alone Complex" (S.A.C.), under the direct supervision of the Ministry of the Interior.

Its duties include a wide range of investigations, such as responding to critical cyber crimes, guarding VIPs within the country, revealing political corruption, investigating violent murder, and dealing with top secret assassination cases. The elite S.A.C. is at its best in cyber confrontations, but it is also extremely capable of physical confrontations by utilizing high quality cyborgs.

[Source: AniDB]